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  1. #include <stdio.h>
  2.  
  3. #define MAXN 100 // max characters in a group/concert name
  4. #define MAXG  50 // max concerts/groups
  5. #define MAXC   3 // max categories
  6.  
  7. char  group  [MAXG][MAXN];
  8. int   fans   [MAXG][MAXC];
  9. float prices [MAXC];
  10. float sales  [MAXG];
  11. int   count = 0;
  12.  
  13. void printArray () {
  14.   printf ("%15s%5s%5s%5s%10s\n", 
  15.   "Concert", "s1", "s2", "s3", "Sales");
  16.   for (int i = 0; i < count; i++) {
  17.     printf ("%15s", group [i]);
  18.     for (int j = 0; j < MAXC; j++) {
  19.       printf ("%5d", fans[i][j]);
  20.     } // end for each category
  21.     printf ("%10.2f\n", sales [i]);
  22.   } // end for each group
  23. } // end function printArray
  24.  
  25. void computeSales () {
  26.   for (int i = 0; i < count; i++) {
  27.     sales [i] = 0;
  28.     for (int j = 0; j < MAXC; j++) {
  29.       sales [i] += prices [j] * fans [i][j];
  30.     } // end for each category
  31.   } // end for each group
  32. } // end function computeSales
  33.  
  34. void switchRows (int m, int n) {
  35.   char tc;
  36.   int  ti;
  37.   float v;
  38.   // printf ("Switching %d with %d\n", m, n);
  39.   for (int i = 0; i < MAXN; i++) {
  40.     tc = group [m][i];
  41.     group [m][i] = group [n][i];
  42.     group [n][i] = tc;
  43.   } // end for each character in a group name
  44.   for (int i = 0; i < MAXC; i++) {
  45.     ti = fans [m][i];
  46.     fans [m][i] = fans [n][i];
  47.     fans [n][i] = ti;
  48.   } // end for each fan category
  49.   v = sales [m];
  50.   sales [m] = sales [n];
  51.   sales [n] = v;
  52. } // end switch
  53.  
  54. int findMinSales (int m) {
  55.   float min = sales [m];
  56.   int target = m;
  57.   for (int i = m+1; i < count; i++)
  58.     if (sales [i] < min) {
  59.       min = sales [i];
  60.       target = i;
  61.     } // end new max found
  62.   return target;
  63. } // end function findMinSales
  64.  
  65. void sortBySales () {
  66.   int target;
  67.   for (int i = 0; i < count; i++) {
  68.     target = findMinSales (i);
  69.     if (target > i)
  70.       switchRows (i, target);
  71.   } // for each concert
  72. } // end function sortBySales
  73.  
  74. void getData () {
  75.   // for (int i = 0; i < MAXG; i++) sales [i] = 0;
  76.   printf ("Enter ticket prices in each of %d cateogories: ", MAXC);
  77.   for (int i = 0; i < MAXC; i++)
  78.     scanf ("%f", &prices [i]);
  79.   printf ("-- Enter group and fans in %d categories\n", MAXC);
  80.   printf ("   . to finish entries:\n");
  81.   for (int i = 0; i < MAXG; i++) {
  82.     scanf ("%s", group[i]);
  83.     if (group [i][0] == '.') 
  84.       break;
  85.     count++;
  86.     for (int j = 0; j < MAXC; j++)
  87.       scanf ("%d", &fans[i][j]);
  88.   } // end for each group
  89. } // end function getData
  90.  
  91. int main(void) {
  92.   getData ();
  93.   computeSales ();
  94.   printArray ();
  95.   printf ("\n --- Sorted ---\n");
  96.   sortBySales ();
  97.   printArray ();
  98.   printf("... bye ...\n");
  99.   return 0;
  100. }
Success #stdin #stdout 0s 4532KB
comments (?)
stdin
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Standard input is empty
stdout
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Enter ticket prices in each of 3 cateogories: -- Enter group and fans in 3 categories
   . to finish entries:
        Concert   s1   s2   s3     Sales
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00

 --- Sorted ---
        Concert   s1   s2   s3     Sales
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
                   0    0    0      0.00
... bye ...
https://ideone.com/x7iH9X
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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